Object looks fine in material view but black in rendered
The material of the text is maden by a texture (missing in the .blend file) going into a background node wich feeds the material input (and into the displacement input also).

Background node is intended to be used in the world tab, not the material tab.
I used a diffuse node instead, turned the world to pure black, reduced the lamps intensity to 1000 and assigned a simple wood seamless texture:
this is the result.